RTC with integrated NVRAM and trickle-charge support
The DS1343E-3+ is an SPI-bus real-time clock from Analog Devices that keeps calendar and time data in YY-MM-DD-dd and HH:MM:SS (12/24 hr) formats, with an integrated 96-byte NVRAM for logging or configuration storage. On-chip features include an alarm, leap-year compensation, a square-wave output, and a trickle charger for backup battery maintenance — all in a 20-pin TSSOP package that reflows cleanly on a standard lead-free profile.
